I first spotted an Ona bag at last years Photography show at the NEC in Birmingham. A renowned photographer I admire was carrying one around and I thought then how cool they looked and since then I've been on the lookout for one that I could use alongside my faithful Billingham Hadley, which in spite of being awesome is a little bit small for when I want to carry everything around with me. Ona bags are made in the USA and have a reputation for their insane quality. In fairness they have a price ticket to match, but as you'd expect you get what you pay for with a camera bag, and touting expensive kit around it pays to invest in a good quality camera bag.
My particular Ona is the Brixton model, made from a durable, water-resistant waxed canvas it features a thick foam padded interior to help protect camera gear and for further protection, there are side weather flaps attached to the front flap to provide full closure when the bag is secured.
It's easily large enough for my Fuji X-T1 along with two or three lenses or so in the main compartment, and can accomodate a 13" laptop, such as a Macbook Pro.
It also features two deep front pockets for those extra bits and pieces along with two small side pockets and a rear pocket for a magazine or maybe a tablet if you're travelling around a bit.
To cap it all off the adjustable 54" shoulder strap features a shoulder pad for added comfort and you also get a grab handle, which is nice and substantial.
Overall, the Brixton is a solid, reliable camera bag. I would temper the excitement I have for it by passing I do find it a little heavier than the Billingham's I've had. You can certainly feel the difference in weight, even just carrying around an XT-1 body and a couple of lenses, and for full days out if I'm not using all my kit I tend to reach for the Hadley still.
Having said that, the Ona is beautifully made, and is a real high quality camera bag, if you're in the market for a high quality camera bag, then you won't go far wrong looking at the Ona Bag range.